/*
* Licensed to Elastic Search and Shay Banon under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Elastic Search licenses this
* file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.elasticsearch.rest.action.count;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.count.CountRequest;
import org.elasticsearch.action.count.CountResponse;
import org.elasticsearch.action.support.broadcast.BroadcastOperationThreading;
import org.elasticsearch.client.Client;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.rest.BaseRestHandler;
import org.elasticsearch.rest.RestChannel;
import org.elasticsearch.rest.RestController;
import org.elasticsearch.rest.RestRequest;
import org.elasticsearch.rest.XContentRestResponse;
import org.elasticsearch.rest.XContentThrowableRestResponse;
import org.elasticsearch.rest.action.support.RestActions;
import org.elasticsearch.rest.action.support.RestXContentBuilder;
import java.io.IOException;
import static org.elasticsearch.action.count.CountRequest.*;
import static org.elasticsearch.rest.RestRequest.Method.*;
import static org.elasticsearch.rest.RestStatus.*;
import static org.elasticsearch.rest.action.support.RestActions.*;
/**
* @author kimchy (Shay Banon)
*/
public class RestCountAction extends BaseRestHandler {
@Inject public RestCountAction(Settings settings, Client client, RestController controller) {
super(settings, client);
controller.registerHandler(POST, "/_count", this);
controller.registerHandler(GET, "/_count", this);
controller.registerHandler(POST, "/{index}/_count", this);
controller.registerHandler(GET, "/{index}/_count", this);
controller.registerHandler(POST, "/{index}/{type}/_count", this);
controller.registerHandler(GET, "/{index}/{type}/_count", this);
}
@Override public void handleRequest(final RestRequest request, final RestChannel channel) {
CountRequest countRequest = new CountRequest(RestActions.splitIndices(request.param("index")));
// we just send back a response, no need to fork a listener
countRequest.listenerThreaded(false);
try {
BroadcastOperationThreading operationThreading = BroadcastOperationThreading.fromString(request.param("operation_threading"), BroadcastOperationThreading.SINGLE_THREAD);
if (operationThreading == BroadcastOperationThreading.NO_THREADS) {
// since we don't spawn, don't allow no_threads, but change it to a single thread
operationThreading = BroadcastOperationThreading.SINGLE_THREAD;
}
countRequest.operationThreading(operationThreading);
if (request.hasContent()) {
countRequest.query(request.contentByteArray(), request.contentByteArrayOffset(), request.contentLength(), true);
} else {
String source = request.param("source");
if (source != null) {
countRequest.query(source);
} else {
countRequest.query(RestActions.parseQuerySource(request));
}
}
countRequest.queryHint(request.param("query_hint"));
countRequest.routing(request.param("routing"));
countRequest.minScore(request.paramAsFloat("min_score", DEFAULT_MIN_SCORE));
countRequest.types(splitTypes(request.param("type")));
} catch (Exception e) {
try {
XContentBuilder builder = RestXContentBuilder.restContentBuilder(request);
channel.sendResponse(new XContentRestResponse(request, BAD_REQUEST, builder.startObject().field("error", e.getMessage()).endObject()));
} catch (IOException e1) {
logger.error("Failed to send failure response", e1);
}
return;
}
client.count(countRequest, new ActionListener<CountResponse>() {
@Override public void onResponse(CountResponse response) {
try {
XContentBuilder builder = RestXContentBuilder.restContentBuilder(request);
builder.startObject();
builder.field("count", response.count());
buildBroadcastShardsHeader(builder, response);
builder.endObject();
channel.sendResponse(new XContentRestResponse(request, OK, builder));
} catch (Exception e) {
onFailure(e);
}
}
@Override public void onFailure(Throwable e) {
try {
channel.sendResponse(new XContentThrowableRestResponse(request, e));
} catch (IOException e1) {
logger.error("Failed to send failure response", e1);
}
}
});
}
}